Knowledge Classification Protocol (KCP): When Human and Agent Share the Same Ontological Plane

Scientific paper describing the Knowledge Classification Protocol (KCP), an ontological architecture of 7 registries enabling humans and LLM agents to share the same information classification plane. Empirical evidence from 4 weeks of sessions with a single-layer prototype is documented, and Kaia Core is presented — a 4-layer architecture with ontological filtering. The document was built using Spec-Driven Ontology (SDO), a method where the artifact's ontology is translated into questions that activate the agent's reasoning.